When you drink alcohol with caffeine, the caffeine can hide some of the effects of the alcohol. This can cause you to drink more and lead to more risk-taking behaviours. Common causes of rhabdomyolysis include trauma, infection, drug abuse, muscle strain and bites from poisonous snakes or insects. Gut health. Consuming 3 cups of coffee a day for as few as 3 weeks may increase the amount and activity of beneficial gut bacteria ( 52).

Caffeine, as do other alkaloids such as cinchonine, quinine or strychnine, precipitates polyphenols and tannins. This property can be used in a quantitation method. [ clarification needed] [213] Natural occurrence Roasted coffee beans

More about caffeine

Caffeine can be quantified in blood, plasma, or serum to monitor therapy in neonates, confirm a diagnosis of poisoning, or facilitate a medicolegal death investigation. Plasma caffeine levels are usually in the range of 2–10mg/L in coffee drinkers, 12–36mg/L in neonates receiving treatment for apnea, and 40–400mg/L in victims of acute overdosage. Urinary caffeine concentration is frequently measured in competitive sports programs, for which a level in excess of 15mg/L is usually considered to represent abuse. [209] Analogs

High caffeine intake has also been shown to raise blood pressure during exercise in healthy people, as well as in those with mildly elevated blood pressure ( 37, 38). Theophylline (4%): Relaxes smooth muscles of the bronchi, and is used to treat asthma. The therapeutic dose of theophylline, however, is many times greater than the levels attained from caffeine metabolism. [46]Caffeine is used for both prevention [34] and treatment [35] of bronchopulmonary dysplasia in premature infants. It may improve weight gain during therapy [36] and reduce the incidence of cerebral palsy as well as reduce language and cognitive delay. [37] [38] On the other hand, subtle long-term side effects are possible. [39] Drinking or eating caffeine when taking other drugs can be unpredictable and increase your risk of harm. Caffeine and medicines Some analog substances have been created which mimic caffeine's properties with either function or structure or both. Of the latter group are the xanthines DMPX [210] and 8-chlorotheophylline, which is an ingredient in dramamine. Members of a class of nitrogen substituted xanthines are often proposed as potential alternatives to caffeine. [211] [ unreliable source?] Many other xanthine analogues constituting the adenosine receptor antagonist class have also been elucidated. [212]

Most of these studies have looked at caffeine from coffee only. What are the short-term effects of consuming caffeine?Caffeine overdose can result in a state of central nervous system overstimulation known as caffeine intoxication, a clinically significant temporary condition that develops during, or shortly after, the consumption of caffeine. [140] This syndrome typically occurs only after ingestion of large amounts of caffeine, well over the amounts found in typical caffeinated beverages and caffeine tablets (e.g., more than 400–500mg at a time). According to the DSM-5, caffeine intoxication may be diagnosed if five (or more) of the following symptoms develop after recent consumption of caffeine: restlessness, nervousness, excitement, insomnia, flushed face, diuresis, gastrointestinal disturbance, muscle twitching, rambling flow of thought and speech, tachycardia or cardiac arrhythmia, periods of inexhaustibility, and psychomotor agitation. [141] The brewing temperature doesn’t matter that much; while some purists will claim that pouring boiled water directly on to your coffee grounds will “burn” the flavour, it seems to have little effect on the beneficial compounds inside. Some beverages combine alcohol with caffeine to create a caffeinated alcoholic drink. The stimulant effects of caffeine may mask the depressant effects of alcohol, potentially reducing the user's awareness of their level of intoxication. Such beverages have been the subject of bans due to safety concerns. In particular, the United States Food and Drug Administration has classified caffeine added to malt liquor beverages as an "unsafe food additive". [246] This is more likely to cause side effects, as a full key down/key up is generated. It's included for compatibility with older systems which might need this Institute of Medicine (US) Committee on Military Nutrition Research (2001). "2, Pharmacology of Caffeine". Pharmacology of Caffeine. National Academies Press (US). Archived from the original on 28 September 2021 . Retrieved 15 December 2022.